CPT® Code 82127

Official Description

Amino acids; single, qualitative, each specimen

Common Language Description

The CPT® Code 82127 refers to a laboratory test that is specifically designed to identify the presence of a single amino acid in a specimen, which can be either blood or urine. Amino acids are essential organic compounds that serve as the building blocks of proteins and play a critical role in various metabolic processes within the body. This test is particularly relevant for individuals suspected of having an inborn error of metabolism, a group of genetic disorders that disrupt normal metabolic pathways. The clinical manifestations of these metabolic disorders often present in infancy or early childhood and can vary significantly based on the specific amino acid that is affected. Symptoms may include feeding difficulties, poor growth or failure to thrive, seizures, muscle weakness, renal or liver failure, developmental delays, and cognitive impairments. To perform the test, a blood sample is typically collected through venipuncture, which is a procedure that involves puncturing a vein to obtain blood. Alternatively, a urine sample can be collected either through a voided specimen or catheterization. The analysis of the serum or plasma, as well as urine samples, is conducted using advanced techniques such as liquid chromatography-tandem mass spectrometry, which allows for precise identification and quantification of amino acids. It is important to note that if the test is intended to measure the quantitative amount of a single amino acid in a specimen, the appropriate code to report would be CPT® Code 82131. Quantitative amino acid testing is particularly useful for monitoring treatment and dietary compliance in patients with specific metabolic disorders, such as phenylketonuria (PKU), cystinuria, and Hartnup disease.

1. Indications

The CPT® Code 82127 is indicated for use in the following scenarios:

Inborn Errors of Metabolism The test is performed for individuals suspected of having an inborn error of metabolism, which are genetic disorders that disrupt normal metabolic processes.
Clinical Symptoms Common symptoms prompting the test may include feeding problems, poor growth or failure to thrive, seizures, muscle weakness, renal or liver failure, developmental delays, and cognitive deficits.

2. Procedure

The procedure for conducting the test under CPT® Code 82127 involves several key steps:

Step 1: Sample Collection A blood sample is obtained through venipuncture, which involves inserting a needle into a vein to draw blood. Alternatively, a urine sample can be collected either by having the patient void into a container or through catheterization, depending on the clinical situation and the patient's ability to provide a sample.
Step 2: Sample Preparation Once the samples are collected, they are prepared for analysis. This may involve processing the blood to separate serum or plasma, as well as preparing the urine sample for testing.
Step 3: Testing Methodology The prepared serum/plasma and urine samples are then analyzed using liquid chromatography-tandem mass spectrometry. This advanced analytical technique allows for the precise identification and quantification of amino acids present in the samples.

3. Post-Procedure

After the procedure, the laboratory will analyze the samples and generate a report detailing the presence of the single amino acid tested. The results can provide critical information for diagnosing metabolic disorders and guiding further clinical management. If the test is intended to measure the quantitative amount of a single amino acid, the appropriate CPT® Code 82131 should be reported. It is essential for healthcare providers to interpret the results in conjunction with clinical findings and other diagnostic tests to ensure accurate diagnosis and treatment planning.

Short Descr	AMINO ACID SINGLE QUAL
Medium Descr	AMINO ACIDS 1 QUALITATIVE EACH SPECIMEN
Long Descr	Amino acids; single, qualitative, each specimen
Status Code	Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days	XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC)	9 - Not Applicable
Multiple Procedures (51)	9 - Concept does not apply.
Bilateral Surgery (50)	9 - Concept does not apply.
Physician Supervisions	09 - Concept does not apply.
Assistant Surgeon (80, 82)	9 - Concept does not apply.
Co-Surgeons (62)	9 - Concept does not apply.
Team Surgery (66)	9 - Concept does not apply.
Diagnostic Imaging Family	99 - Concept Does Not Apply
CLIA Waived (QW)	No
APC Status Indicator	Conditionally packaged laboratory tests
Type of Service (TOS)	5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS)	T1H - Lab tests - other (non-Medicare fee schedule)
MUE	1
CCS Clinical Classification	206 - Microscopic examination (bacterial smear, culture, toxicology)

Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.

Reference (outside) laboratory: when laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number.